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Westinghouse HLB3350TV - Thermal Magnetic Trip Unit 350A 600V 3-Pole

Westinghouse
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Westinghouse HLB3350TV Circuit Breaker is a 3-pole thermal magnetic circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 600V AC and accommodates a current range of 350A minimum to 350A maximum, providing long-time and instantaneous (LI) protection functions. This unit weighs 2 lb and is constructed as a trip unit and programmer within the MARK 75 family, compatible with LB and HLB frames. It complies with industry standards for thermal magnetic protection, ensuring reliable performance in demanding environments. Typical applications include industrial panelboards and switchgear requiring precise overcurrent coordination.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit, LI (Long-Time and Instantaneous) functions
  • Voltage Rating: 600V AC
  • Current Rating: 350A (minimum and maximum)
  • Poles: 3
  • Protection: Thermal Magnetic
  • Compatible Frames: LB, HLB
  • Family: MARK 75
  • Weight: 2 lb
  • Item Subcategory: Trip Units & Programmers